/conductor-ampacity-and-sizing

  Electrical Theory Every aspiring electrician needs to have a solid foundation in electrical theory from the beginning. Understanding the power you're working with in principle can assist in keeping you, and others secure because electricity has no sound, no smell, and cannot be seen. To ensure appropriate installation and to carry out duties like repairing electrical systems and equipment, the electrical theory is crucial for understanding the function and functioning of electrical equipment.  Atomic Structure and electrical circuit   Arrangement of the Atom The smallest component of matter is the atom. Three components make up an  atom . The nucleus, located in the atom's heart, is made up of positively charged  protons. The remainder of the nucleus comprises  neutrons , which are uncharged particles. Negatively charged  electrons  also circle the nucleus.           Valence shell The c...

  Branch Circuits Wire joining a power supply, fuses, switches, and the load forms a circuit . The device known as the load , such as the light bulb in a lamp, uses the energy passing through the circuit. A branch circuit is a specific kind of circuit that connects equipment in a building to a circuit breaker panel. Branch circuits can be categorized depending on their use.                                                         Branch circuit     A circuit breaker board is present in each structure with electrical wiring. This panel is typically a box of metal mounted to the wall and loaded with switches . Each switch in the house has been linked to an electrical circuit; if switched off, it ...